ESMTP


Also found in: Acronyms.

ESMTP

(messaging, protocol)
Extended SMTP. Initially defined in RFC 1869 and extended thereafter.

See also ETRN.
References in periodicals archive ?
VersaMail supports industry standard protocols: POP, IMAP, APOP and ESMTP.
It contains native support for key Internet standards including IMAP4, POP3, ESMTP, MIME, LDAP, NOTARY, SSL 3.